/* file.h
 * Definitions for file structures and routines
 *
 * Ethereal - Network traffic analyzer
 * By Gerald Combs <gerald@zing.org>
 * Copyright 1998 Gerald Combs
 *
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifndef __FILE_H__
#define __FILE_H__

#include <sys/types.h>
#include <sys/time.h>

#include <pcap.h>

/* Data file formats */
#define CD_UNKNOWN    0
#define CD_WIRE       1
#define CD_SNOOP      2
#define CD_PCAP_BE    3
#define CD_PCAP_LE    4
#define CD_NA_UNCOMPR 5

/* Data file magic info */
#define SNOOP_MAGIC_1 0x736e6f6f /* 'snoop' in ASCII */
#define SNOOP_MAGIC_2 0x70000000
#define PCAP_MAGIC    0xa1b2c3d4

/* Data file format versions we can handle */
#define SNOOP_MIN_VERSION 2
#define SNOOP_MAX_VERSION 2

/* Link types */
#define LT_UNKNOWN 0
#define LT_ETHER10 1
#define LT_IEEE802 6

typedef struct _capture_file {
  FILE       *fh;       /* Capture file */
  long        f_len;    /* File length */
  int         swap;     /* Swap data bytes? */
  guint16     cd_t;     /* Capture data type */
  guint32     vers;     /* Version.  For tcpdump minor is appended to major */
  guint32     lnk_t;    /* Network link type */
  guint32     count;    /* Packet count */
  guint32     drops;    /* Dropped packets */
  guint32     esec;     /* Elapsed seconds */
  guint32     eusec;    /* Elapsed microseconds */
  guint32     snap;     /* Captured packet length */
  pcap_t     *pfh;      /* Pcap session */
  guint8      pd[2048]; /* Packet data */
  GList      *plist;    /* Packet list */
  frame_data *cur;      /* Current list item */
} capture_file;

/* Taken from RFC 1761 */

typedef struct _snoop_file_hdr {
  guint32 magic1;
  guint32 magic2;
  guint32 vers;
  guint32 s_lnk_t;
} snoop_file_hdr;

typedef struct _snoop_frame_hdr {
  guint32 orig_len;
  guint32 inc_len;
  guint32 pr_len;
  guint32 drops;
  guint32 secs;
  guint32 usecs;
} snoop_frame_hdr;

int  open_cap_file(char *, capture_file *);
void close_cap_file(capture_file *, GtkWidget *, guint);
int  read_cap_file(char *, capture_file *);
void pcap_dispatch_cb(u_char *, const struct pcap_pkthdr *, const u_char *);
/* size_t read_frame_header(capture_file *); */

#endif /* file.h */
